*{
    margin: 0;
    padding: 0;
}

.banner_img{
    width: 100%;
    height: 200px;
}

.btn{
    padding: 5px 10px;
    box-sizing: border-box;
    color: #000;
    background-color: #fff;
}

.hot_btn,.ing_btn{
    display: inline-block;
    width: 50%;
    text-align: center;
}


.active_btn{
    color: #FF5F16;
}

.city_btn{
    color: #fff;
    background-color: rgba(0,0,0,.2);
    border: 0;
    border-radius: 20px;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1;
}